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OIL-LESS COMPRESSORS

O

PERATION

& M

AINTENANCE

M

ANUAL

Product Use Criteria:

• Pump only clean, dry air.
• Operate at 40ºF - 104ºF (4.4ºC - 40ºC).
• Protect unit from dirt & moisture.
• Do not pump flammable or explosive gases or

use in an atmosphere that contains such gases.

• Corrosive gases and particulate material will

damage unit.  Water vapor, oil-based contaminants
or other liquids must be filtered out.

• Oil-less compressors require NO lubrication
• Consult your Gast Distributor/Representative

before using at high altitudes.

IMPORTANT: PLEASE READ THIS MANUAL AND SAVE FOR FUTURE REFERENCE.

Thank you for purchasing this Gast product.  It is manufactured to the highest standards

using quality materials.  Please follow all recommended maintenance, operational

and safety instructions and you will receive years of trouble free service.

www.gastmfg.com

ISO 9001 & 14001 CERTIFIED

®Registered Trademark/™Trademark of Gast Manufacturing Inc., Copyright © 2003 Gast Manufacturing Inc. All Rights Reserved.

Model DDL30 Shown

Model DDL40B Shown

Model DDL120 Shown

PART NO. 70 - 1570  F1-210  (REV-C) 

1

Summary of Contents for DDL30

Page 1: ...n Consult your Gast Distributor Representative before using at high altitudes IMPORTANT PLEASE READ THIS MANUAL AND SAVE FOR FUTURE REFERENCE Thank you for purchasing this Gast product It is manufactured to the highest standards using quality materials Please follow all recommended maintenance operational and safety instructions and you will receive years of trouble free service www gastmfg com IS...

Page 2: ...y all safety messages This is the safety alert symbol This symbol alerts you to hazards that can kill or hurt you and others The safety alert symbol and the words DANGER and WARNING will precede all safety messages These words mean You will be killed or seriously injured if you don t follow instructions You can be killed or seriously injured if you don t follow instructions All safety messages wil...

Page 3: ...by a qualified person Check that supply voltage agrees with that listed on product nameplate WARNING Read and follow all safety instructions To guard against injury basic safety precautions should be observed Precautions for aquarium use 1 If the air pump falls into the water DO NOT reach into the water to retrieve it 2 Carefully examine the appliance after installation It should not be plugged in...

Page 4: ...n a tank is securely installed before operating it 7 Read and observe all the important notices on the air pump It is your responsibility to Regularly inspect and make necessary repairs to product in order to maintain proper operation Make sure that pressure is released from product before starting maintenance Never add oil to this oil less compressor Cleaning Do Not use kerosene or ANY other comb...

Page 5: ...repair DIAGRAM E DIAGRAM D DIAPHRAGM MOUNTING BLOCK DIAPHRAGM L TUBE U NUT DIAPHRAGM MOUNTING BLOCK WASHER ROD U NUT CASING BLOCK Service Kit contents vary with compressor models Replacing Head and Diaphragm Assemblies DDL5 SERIES Refer to Diagram C Disassembly 1 Remove hex nuts from cover Refer to Fig 11 2 Remove cover and cover gasket 3 Gently lift out electromagnet and casing block 4 Remove hea...

Page 6: ...TIVATING ARM 14 SCREW 15 VIBRATION CONTROL RUBBER 16 COIL FRAME 17 U NUT 18 POWER CORD 19 CORD RELIEF 20 CORD STOPPER 21 CENTER PLATE 22 GASKET 23 LOWER HOUSING 24 RUBBER FEET Your model may vary in appearance and configuration However internal components will be similar to those shown Parts shown are for stock models For specific OEM models please consult the factory When corresponding or orderin...

Page 7: ...MPLIED BY ANY LITERATURE DATA OR PERSON GAST S MAXIMUM LIABILITY UNDER THIS EXCLUSIVE REMEDY SHALL NEVER EXCEED THE COST OF THE SUBJECT PRODUCT AND GAST RESERVES THE RIGHT AT ITS SOLE DISCRETION TO REFUND THE PURCHASE PRICE IN LIEU OF REPAIR OR REPLACEMENT GAST WILL NOT BE RESPONSIBLE OR LIABLE FOR INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND however arising including but not limited to those for...

Page 8: ...lignment Realign Leaky hose or check valve Replace Dirt or liquid in compressor Inspect and clean Blown or leaking head gasket or tubes Replace TROUBLESHOOTING CHART www gastmfg com ISO 9001 14001 CERTIFIED 8 PART NO 70 1570 F1 210 REV C We have Gast Authorized Repair Facilities throughout the world For the most up to date listing contact one of our sales offices below World Headquarters P O Box 9...

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